BACKGROUND
Trusses are often used in stage lighting applications to hold stage lights and other supported equipment, such as winches. The trusses are arranged to be located wherever there is a need for a support.
SUMMARY
The inventor recognizes that trusses may be located in various configurations.
An embodiment describes a truss hub that allows configuring trusses to different configurations. An embodiment describes a universal truss hub.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 shows an assembled truss hub from the top;
FIG. 2 shows a cross section across line 2-2 in FIG. 1;
FIG. 3 shows the spigot pins details on the ends of the truss hub;
FIG. 4 shows the truss hub with a single truss attached thereto;
FIGS. 5-11 show alternate configurations in which respectively 2-8 trusses are attached to different parts of the truss hub in radially extending directions;
FIG. 12 shows a single piece of the multipiece truss hub; and
FIGS. 13-15 show the different parts making up the truss hub.
DETAILED DESCRIPTION
A truss connector or “hub” that Trusses can be attached to different parts of a hub. The truss is attached to the hubs to form different configurations.
In a first embodiment is illustrated in FIG. 1. The hub itself 100 includes numerous different connection points such as 101, 102, 103 around the outer periphery of the hub. In actuality, there are many such connection points and any two or three of these connection points can be connected to a truss piece. The hub is round in circular outer diameter, and formed of four separate pieces. Each of the pieces such as 110 is a section of a circle, which includes 30 different connection points thereon. The truss part can be connected to any of these connection points as explained herein. Four of the pieces 110 are connected together to form the truss hub.
Once formed, the truss hub can hold pieces of truss connected to any of the different parts in any of a number of different configurations.
The truss hub itself is a structural element, and FIG. 2 shows a cross-section of along the line 2-2 in FIG. 1. The hub piece includes structural tubular bars 200,205 as well as cross pieces 210 to improve the structural support. Other supports, such as the vertical piece 215 may also improve the structural support.
The holes such as 102 define areas for connection of connection parts 220 which are adapted, in operation, to connect to a piece of truss. FIG. 3 illustrates how the connection part 220 connects to the standard spigot pins 300 at the end of a piece of truss 310. Hairpin keepers 315 may hold the attachment into place of at the top and the bottom. The universal truss hub thus allows, for one single device, trusses to connect to the universal truss hub in a number of different ways and orientations. Note that even though the outer periphery of the truss hub is generally circular, the truss mount portions 400 can connect across any arcuate section of the truss. Each of the truss pieces connects to the truss hub, radially, with the longitudinal axis of the truss extending radially outward from the central outer section of the truss. FIG. 4 illustrates a configuration in which the universal truss mount 100 is connected to a single truss mount portion 400. Note that one side of the truss mount portion 405 is connected to one of the mounting holes 410 in the universal truss mount. Another side 420 is connected to the truss mount hole 421. According to an embodiment, the truss connection may also include a center mounting portion 430 connected into one of the holes. As in the above, the truss mount portion can connect to a piece of truss generally shown as 450, with the truss piece extending radially away from the hub.
While FIG. 4 shows a configuration with only one radial truss connected to the universal mount, it should be understood that other configurations of the same truss mount device allow different numbers of trusses to be connected thereto.
FIG. 5 illustrates the truss mount with two radial truss connectors 500, 502 connected to the truss hub 100. FIG. 6 illustrates the same truss hub 100 connected to three different trusses 600, 610 and 630. In a similar way, FIG. 7 illustrates how the truss hub 100 and be connected to four different truss portions, 700, 710, 720 and 730. FIG. 8 illustrates the central truss hub connected to five different trusses. FIG. 9 illustrates the truss 100 connected to six different trusses. FIG. 10 illustrates the truss of connected to seven different trusses. FIG. 11 illustrates the truss hub connected to eight different trusses. Any of one through eight trusses can be connected using the same truss hub in different configurations. FIG. 12 shows a close-up of one section of the truss hub, showing the hub flange which is machined from three-quarter inch aluminum with a number of the holes therein as previously described. Four of these sections are bolted together to form the outer periphery of the truss hub. FIG. 13 shows a close-up view of the hub attachment portions 1310 as shown in FIG. 1. This attachment portion can be connected to any portion on the outer diameter of the truss hub, and thereby connect between 1 and 8 different pieces of truss.
FIG. 13 illustrates a front view of this device, showing the different counterbores facing outward 1300, 1302, 1304, 1306. This may form the location for the center connection portion of the truss of connecting to the center of the diameter area, as needed. A side view shown in FIG. 14 shows the front surface of the hub, and also shows the different attachment pieces 1400, 1402, 1404, 1406 that can be used to connect to the actual hub parts. A plan view shown in FIG. 15 illustrates how these connection pieces can connect to the truss hub, and also provide a connection interface for connecting to the actual truss pieces themselves. A stiffener 1420 may be a vertical piece of ⅜ inch aluminum which may be located along the plate in order to stiffen the connection.
Although only a few embodiments have been disclosed in detail above, other embodiments are possible and the inventors intend these to be encompassed within this specification. The specification describes specific examples to accomplish a more general goal that may be accomplished in another way. This disclosure is intended to be exemplary, and the claims are intended to cover any modification or alternative which might be predictable to a person having ordinary skill in the art. For example, other kinds and sizes of truss can be used.
Also, the inventor intends that only those claims which use the words “means for” are intended to be interpreted under 35 USC 112, sixth paragraph. Moreover, no limitations from the specification are intended to be read into any claims, unless those limitations are expressly included in the claims.
Where a specific numerical value is mentioned herein, it should be considered that the value may be increased or decreased by 20%, while still staying within the teachings of the present application, unless some different range is specifically mentioned.
The previous description of the disclosed exemplary embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these exemplary embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Patent Grant
8572924
